Thread-cutting temple for looms



A. A. HULL THREAD CUTTING TEMPLE FOR LOOMS Filed Jan. 5, 1924 2Sheets-Sheet 1 \nvenTbr. AWred A. HuH

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July 29 1924.

A. A. HULL THREAD CUTTING TEM PLE FOR LOOMS Filed Jan. 5. 1924 2Sheets-Sheet 2 \nvenTor. Alfred A. HUN by M WkM Afiys.

u u I L a I I 1 I 1 1 1a Patented July as, 1924.

TATES etreat ALFRED A. HULL, OF KNQXVI LLE,.TENQNESSEE, ASSIGNQR) ronsarur, CORPORATION;

, OE Q PALEL MA$SAQHUSETTS A-Q BI' RATI NT MA NE- V [lineman-commuteinlurrn roe Looms;

Applicationfiled-January a 1924. Serial 110,684,144.

T all cchom itimag concern]:

Be it known that I, ALFRED ;A: HULL, a citizen of the United rStates,andiresident of Knoxville, county of 'Knox, State of Tennessee, haveinvented an Improvement in-Thread-Cutting Temples for Looms, of whichthefollowing description, in connection with the accompanying dra-wing is aspecification, like characters on the draw- -ing representing likeparts. j

This invention relates to improvements in thread cuttingtemples forlooms andthe object of the invention is to provide a simple and improvedmeans whereby the movable blade shall beiforced-into engagement with thestationary blade during the cutting stroke thereby to secure aneffective shearing act-1011 upon the thread or filling end. 7

A'further object of the invention is to provide -a -construction in"which a separate spring; member. is provided for thus forcing the.movable cutterblade into engagementv with the stationary-blade and in-wl1i'cl1inea-ns are provided for "adjusting" the tension of the springso as to secure the desired results under allccnditions. These andotherv ob-je'ctsand'features th-e inventionwill appear more fully from 1the accompanying description and drawings and will be particularlypointed font in the claims. *t

Inthe drawings; Fig. l is a side elevation f a temple em bodying apreferred form-of the invention; Fig. Qis an end elevationoftheconstructiongshown'in Fig. 1;

Figs. 3, 4; and 5 are views on an enlarged scale in perspective with:'a'pertion of the temple head shown'in dotted lines and'with the cuttermember andassociatedparts particularly invol qed in this invention shownin different positions;

The general construction and purpose of a temple and a temple threadcutter for looms is so well known to those familiar with the weavingartthat it is unnecessary to set the same forth in anything more thanageneral way.

edge 15.

and expeditiously tormed as; a -single casting while the cutter bladeportion is ofthe -90 usual temple has formed thereonands'ecuredithereto'the temple head comprising the :POCljQ, the cap- 3with'the-enclosed toothedvroll 4 jou-rnalled on the studs 5 and v Vtheentire "bar-and head move forwardly when the lay strikes thedependingheel 6.

Thecutting mechanismof the temple comprises a vertical stationary cuttermeniber. shown as a fiat steel blade 7 mounted at vided with a notchl9.A set screw 10 h'aving a cylindrical head fitting'in this notch isscrewed into the. head of the temple and holds the blade? firmly inplace. -.:ner 11 ofthisblade forms its cutting edge.

The cutting mechanism further comprises a movable cutter member which ispreferably of the general construction-shownvin the Stimpson patentabove referred to.

This cutter member has arocking backward and forward movement in theusual verticazl recess in the temple headf Inthep'referred constructionillustrated it is a sin gle integral cast iron casting. a 1 body portion12 of generally rectangular shape, a depending heel-13 andfia cutterblade 14. r The portion of the movable cutter' member which'forms thecutter-blade 1d ischilled during the operation of casting and is thushardened so that it may be g'ground oit' to present the required cuttingThusthe entire member 1s cheaply required hardness to providewtherequired cutting edge. In the CO-11$tIL1CLlOI1 illustrated the effectiveend or the ntegral cutterblade 'let is also formed' at a slight anglewithrespeot to the vertical plane of the body 12 so, that whenthemovable cutter member is in position thenutterbladeiel diverges upwardlyslightly away from the plane of the stationary cutter member.

This brings the cutting edge 15 close against the stationary verticalcutter member '7 and hence if the movable cutter member be held snuglyagainst the fixed cutter member then 'an' accurate and close cooperationof the two edges is assured during the cutting stroke.

In this invention the required pressure of the movable cutter memberagainst the stationary cutter member is secured by a novel construction.A metal plate 16 ot' a shape The cor- '70 t: comprises 80 andconstruction generally similar to the stationary cutter member 7 ismounted in the temple head at the side of the movable cutter memberopposite the stationary cuttertemple head, preferably in a bore providedfor that purpose, and abuts against the metal plate 16 below the axisabout which the metal plate swings on the set screw 10. At its outer endthis spring abuts against 7 a base plate 19, shown as a flat strip ofmetal.

This base plate is'adjustably secured by a screw 20 to the outside ,faceof the temple head.

It will thus be seen that by screwing the screw 20 into and out of thetemple head the base plate 19 at its free end may be moved toward andfrom the temple head thus to vary the tension of the spring 18 and causeit to press against the metal plate 16. Thus the spring, with therequired degree of tension, acts yieldingly to force the metal plate 16against the movable cutter member 14L and thereby to force the cuttingedge 15 of the movable cutter member into engagement with the cuttingedge 11 of the stationary cutter member 7 during the cutting stroke.

There is thus provided a very simple, effective and accurate means forensuring the engagement of the cutting edges or" the cutter membersduring the cutting stroke under all conditions.

The movable cutter member is yieldingly held in place in the recess inthe temple head in the usual manner as by the usual spring 21 coiled atone end about a stud 22 projecting from the bar 1 and at the other endabout a stud 23 projecting from the side of the heel 13, this springacting normally to hold the movable cutter member projected rearwardlywith the cutting blade end elevated and with its cutting edge at therear of the cutting edge of the stationary blade. When the heel13 isstruck by the lay the movable cutter member is swung downwardly andprojected forwardlyto effect the shearing action between the cuttingedges of the two blades to sever the thread or filling end extendingfrom the cloth.

Having thus described the invention what is claimed as new and desiredto be secured by Letters Patent is:

1. A thread cutting temple for looms comprising a vertical stationarycutter member mounted in the temple head, a backwardly and forwardlymovable cutter member cooperating with the stationary cutter member tosever the thread, a metal plate mounted in the temple head to swinglaterally at its upper end and engaging the movable cutter member at theside oppositethe stationary cutter member, and a spring mounted in the,

temple head and engaging the metal plate below theaxis about which itswings and acting yieldingly to force the metal plate against themovable cutter member and thereby to force the cutting edge of themovable cutter member into engagement with the edge of the stationarycutter member during the cutting stroke.

2. A thread cutting temple for looms comprising the construction definedin claim 1 together with means for adjusting the tension of the spring.

3. A thread cutting temple for looms comprising a vertical stationarycutter member mounted in the temple head, a backwardly and forwardlymovable cutter member cooperating with the stationary cutter member tosever the thread, a metal plate mounted in the temple head to swinglaterally at its upper end and engaging the movable cutter member at theside opposite the stationary cutter member, a base plate mounted on thetemple head, a helical spring abutting at one end thebase plate and atthe other end the metal plate below the axis about which it swings andacting yieldingly to force the metal plate against the movable cuttermember and thereby to force the cutting edge of the movable cuttermember into engagement with the edge of the stationary cutter memberduring the cutting stroke, and means for adjusting the base plate towardand from the metal plate thereby to adjust the tension of the spring.

In testimony whereof, I have signed my name to this specification.

ALFRED A. HULL.

